# Carpentry Formulator vs iRoofing Phone App

The clearest difference is rating: iRoofing Phone App at 4.5 against Carpentry Formulator's 3.8. iRoofing Phone App also leads on in-app purchases (none vs 1) and review sentiment (58% vs 25%). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Carpentry Formulator sells 1 one-off in-app purchase. iRoofing Phone App asks for nothing beyond the download.

iRoofing Phone App holds the better App Store score, 4.5 against 3.8. That said, the two scores are not equally well evidenced: iRoofing Phone App has 40 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 25% of Carpentry Formulator's written reviews are positive against 58% of iRoofing Phone App's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Carpentry Formulator | iRoofing Phone App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (4 ratings)](https://appshunter.io/ios/app/carpentry-formulator/id305583131/reviews) | **[4.5 (40 ratings)](https://appshunter.io/ios/app/iroofing-phone-app/id1476706659/reviews)** |
| Number of ratings | 4 | **40** |
| Positive reviews | 25.0% of reviews | **58.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | **Free** | Subscription |
| Size | 23 MB | 197 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Applosophy, LLC](https://appshunter.io/developer/438742514) |

## What reviewers say

### Carpentry Formulator

[App page](https://appshunter.io/ios/app/carpentry-formulator/id305583131)

This app provides over 150 formulas and dozens of conversions for carpenters and builders. It calculates loads on walls and headers, material quantities for projects, and dimensions for roofing and stairs. It also includes area and volume calculations for various shapes.

**Highlights:** Load calculations for walls and headers, Material quantity estimation (joists, studs, concrete), Roofing and stair dimension calculations, Area and volume formulas for geometric shapes, Dozens of unit conversion tools, Shareable calculation results

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Professional Features | $2.99 | one-time |


### iRoofing Phone App

[App page](https://appshunter.io/ios/app/iroofing-phone-app/id1476706659)

Instantly generate unlimited roof measurements from various image sources. Enhance customer trust and close more sales with digital presentations and organized project management tools. Streamline your roofing business operations with this comprehensive mobile solution.

**Highlights:** Unlimited roof measurements, Satellite, aerial, drone, and blueprint image support, Auto pitch detection, Customizable digital pitchbook, Customer and task management, Digital manufacturer catalogs

**Features:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Carpentry Formulator free?

Carpentry Formulator is free to download, with in-app purchases available.

### Is iRoofing Phone App free?

iRoofing Phone App is free to download, with no in-app purchases.

### Which has better reviews, Carpentry Formulator or iRoofing Phone App?

iRoofing Phone App is rated higher. Carpentry Formulator averages 3.8 out of 5 from 4 ratings, while iRoofing Phone App averages 4.5 from 40 ratings.

### Do Carpentry Formulator or iRoofing Phone App have ads?

Neither Carpentry Formulator nor iRoofing Phone App shows ads.

### Which is updated more often, Carpentry Formulator or iRoofing Phone App?

Carpentry Formulator ships an update every 2 months, and iRoofing Phone App every 2 months. Most recently, Carpentry Formulator was updated on October 23, 2026 and iRoofing Phone App on October 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*